Boehringer, J. (1913). Queen Sophia of Greece and her daughters.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBoehringer, J. Queen Sophia of Greece and Her Daughters. 1913.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBoehringer, J. Queen Sophia of Greece and Her Daughters. 1913.
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